That should be alright then.
As long as the slowness is due to the brickie being too meticulous!
When we also asked our SS about handover date, he didn't want to commit. He said lots of things are yet to be done and we shouldn't book for removalist or end our tenancy yet.
But our CSR told us 6 weeks to go.. and that was 2 weeks ago.. so we are hoping 4 weeks to go!